<![CDATA[Integrating computational thinking into Programme for International Student Assessment (PISA) assessments presents a significant challenge for Indonesian students, particularly in mathematics education. Despite its crucial role in problem-solving, computational thinking has not been widely implemented by students due to the presence of learning obstacles. This study aims to identify the learning obstacles that junior high school students encounter in understanding systems of linear equations in two variables, specifically about their computational thinking abilities. A qualitative approach with a phenomenological method was employed. Research instruments included a computational thinking test and a semi-structured interview guide. Data were collected from 20 students at a junior high school in Wonosobo Regency, Indonesia. Data analysis consisted of three stages: reduction, display, and conclusion. The findings reveal that students experience three types of learning obstacles—epistemological, ontogenical, and didactical when engaging with systems of linear equations in two variables, indicating that these obstacles hinder the development of their mathematical computational thinking skills.]]>
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